/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 only, as published by the
* Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
package com.akiban.sql.parser;
import com.akiban.sql.StandardException;
/**
* A DDLStatementNode represents any type of DDL statement: CREATE TABLE,
* CREATE INDEX, ALTER TABLE, etc.
*
*/
public abstract class DDLStatementNode extends StatementNode
{
public static final int UNKNOWN_TYPE = 0;
public static final int ADD_TYPE = 1;
public static final int DROP_TYPE = 2;
public static final int MODIFY_TYPE = 3;
public static final int LOCKING_TYPE = 4;
private TableName objectName;
private boolean initOk;
/**
sub-classes can set this to be true to allow implicit
creation of the main object's schema at execution time.
*/
boolean implicitCreateSchema;
public void init(Object objectName) throws StandardException {
initAndCheck(objectName);
}
/**
Initialize the object name we will be performing the DDL
on and check that we are not in the system schema
and that DDL is allowed.
*/
protected void initAndCheck(Object objectName) throws StandardException {
this.objectName = (TableName)objectName;
initOk = true;
}
/**
* Fill this node with a deep copy of the given node.
*/
public void copyFrom(QueryTreeNode node) throws StandardException {
super.copyFrom(node);
DDLStatementNode other = (DDLStatementNode)node;
this.objectName = (TableName)getNodeFactory().copyNode(other.objectName,
getParserContext());
this.initOk = other.initOk;
this.implicitCreateSchema = other.implicitCreateSchema;
}
/**
* A DDL statement is always atomic
*
* @return true
*/
public boolean isAtomic() {
return true;
}
/**
* Return the name of the table being dropped.
* This is the unqualified table name.
*
* @return the relative name
*/
public String getRelativeName() {
return objectName.getTableName() ;
}
/**
* Return the full dot expression name of the
* object being dropped.
*
* @return the full name
*/
public String getFullName() {
return objectName.getFullTableName() ;
}
public final TableName getObjectName() {
return objectName;
}
/**
* Convert this object to a String. See comments in QueryTreeNode.java
* for how this should be done for tree printing.
*
* @return This object as a String
*/
public String toString() {
return ((objectName==null)?"":
"name: " + objectName.toString() +"\n") + super.toString();
}
}